K3ng Keyer Schematic Extra Quality Review

The "K3NG schematic" isn't a single fixed diagram but rather a modular architecture. Because the software is highly customizable, your physical circuit will depend on which features you enable in the code. August | 2015 - kf4bzt

: A simple NPN transistor switch (like a 2N2222) or an optocoupler to isolate the Arduino from the radio's key jack. k3ng keyer schematic

"I'm a hardware guy, Silas," Elias said. "I like tubes and transistors. I don't want to write code." The "K3NG schematic" isn't a single fixed diagram

Look for pull-up resistors (4.7kΩ to 10kΩ) on the paddle inputs. Without these, the pins float, causing random keying. "I'm a hardware guy, Silas," Elias said

He soldered two 10k resistors between the input pins and the power rail. He tapped the paddle. BEEP. A single dit echoed through the shack speakers. It was alive.